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Senior R&D Software Developer Jobs in St Louis, MO

ECS

Senior Software Developer

O Fallon, IL · On-site

$110K - $120K/yr

Everforth ECS is seeking a Senior Software Developer to work in our O'Fallon, IL office. ECS Federal LLC is looking for a Senior Software Developer who possesses and applies expertise on multiple ...

D&G Support Services, LLC

Data Engineer

Saint Louis, MO

$125K - $150K/yr

... in data engineering, software development, or a related technical discipline. • Strong ... Who We Are At D amp;G Solutions, people come first; our teammates, customers, and the communities ...

Eliassen Group

Senior Software Developer

Saint Louis, MO · On-site

$100 - $125/hr

Louis, MO Our client seeks a Senior Software Developer to support modernization and maintenance of a mission-critical enterprise application in AWS for the U.S. Treasury. The role requires full-stack ...

Eliassen Group

Senior Software Developer

Saint Louis, MO · On-site

$100 - $125/hr

Louis, MO Our client seeks a Senior Software Developer to support modernization and maintenance of a mission-critical enterprise application in AWS for the U.S. Treasury. The role requires full-stack ...

The Timberline Group

Lead Software Developer

Saint Louis, MO · On-site +1

$112K - $141K/yr

The individual in this role is a senior member of the IT team who is able to understand the use of ... Software Engineering role. * 6+ years of programming experience in C# .NET. * Past experience ...

DCS Corp

Senior Level Software Developer

Saint Louis, MO

$53 - $70/hr

We are seeking a Software Engineer to support unique systems solutions for the National Geospatial-Intelligence Agency (NGA). We are seeking a Software Engineer to support our client's intelligence ...

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Senior R D Software Developer information

See St Louis, MO salary details

$14

$60

$85

How much do senior r&d software developer jobs pay per hour?

As of Aug 19, 2026, the average hourly pay for senior r&d software developer in St. Louis, MO is $60.02, according to ZipRecruiter salary data. Most workers in this role earn between $50.96 and $67.31 per hour, depending on experience, location, and employer.

What is the difference between Senior R&D Software Developer vs Software Engineer?

AspectSenior R&D Software DeveloperSoftware Engineer
CredentialsBachelor's or Master's in Computer Science or related field; experience in R&DBachelor's or higher in Computer Science or related field
Work EnvironmentResearch and development labs, innovation teamsDevelopment teams, product-focused environments
Industry UsageTech, manufacturing, research institutionsTech companies, startups, software firms
Common Search/ComparisonOften compared for R&D roles and advanced developmentMore general software development roles

The main difference is that a Senior R&D Software Developer focuses on innovative research, prototyping, and developing new technologies within R&D environments, often requiring specialized knowledge and experience. In contrast, a Software Engineer typically works on building, testing, and maintaining software products in production environments. Both roles require strong programming skills, but the Senior R&D role emphasizes research and experimentation.

What are popular job titles related to Senior R&D Software Developer jobs in St. Louis, MO?

For Senior R&D Software Developer jobs in St. Louis, MO, the most frequently searched job titles are:

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The top searched job categories for Senior R&D Software Developer jobs in St. Louis, MO are:

What cities near St. Louis, MO are hiring for Senior R&D Software Developer jobs?

Cities near St. Louis, MO with the most Senior R&D Software Developer job openings:

Senior R D Software Developer jobs near you

Senior Software Developer

ECS

O Fallon, IL • On-site

$110K - $120K/yr

Full-time

Posted 6 days ago

Job description

Everforth ECS is seeking a Senior Software Developer to work in our O'Fallon, IL office.
ECS Federal LLC is looking for a Senior Software Developer who possesses and applies expertise on multiple complex work assignments. The ECS Team provides development and support of GATES, a mission-critical application providing cargo and passenger manifesting and in transit visibility requirements for the DoD. We are seeking a Java Developer with experience developing Web applications to be part of the larger team. Assignments may be broad in nature, requiring originality and innovation in determining how to accomplish tasks. Operates with appreciable latitude in developing methodology and presenting solutions to problems. Contributes to deliverables and performance metrics. As a Senior Software Developer, the selected individual will work hands-on with developer and systems administrators to integrate our solutions and products for our government customer. Key responsibilities are to deliver DevSecOps pipeline solutions and proof of concepts for Continuous Integration/Configuration, Continuous Development, Continuous Delivery/Deployment, Continuous Testing, Continuous Security and Continuous Monitoring. The DevSecOps Engineer is also responsible for driving solutions that meet the customers' technical, financial and business requirements, and supporting a legacy system in the process of being modernized while being hosted in the cloud utilizing DevSecOps processes.
Salary Range: $110,000 - $120,000
General Description of Benefits
  • Bachelor's Degree
  • Java, HTML5 technologies, Angular, Spring, RHEL, SQL, Oracle RDBMS, JavaScript, XML, Agile methodologies, WebLogic, Tomcat, Gradle/Maven/Ant, Python
  • Experience with DevSecOps pipeline
  • Secret Clearance
  • Security + Certification or the ability to obtain immediately following employment.

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